How good are they for music? I mainly listen to electronic music(house, trance, a little dubstep) and rap.

I did some searching, and it seems like Armageddon is a Singapore-based brand that launched less than 2 years ago, so yeah, their stuff might not be available in the US. Didn't expect that.---/|\ http://i.imgur.com/hK9c1lo.jpg?1\|/ http://www.youtube.com/watch?v=vE7x0WLz7SY

Those look good because of the noise cancellation, the detachable cord and the way it folds up

There's not actual noise cancellation, they just isolate better than normal. I'd opt for some different cans. The monoprice ones are fairly uncomfortable. The headband is uncomfortable and the earpads get sweaty easily. They do sound decent for the price though.